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For the Inventor, By the Inventor

Kanagawa, Japan

Koichi Kawasumi

This inventor holds 11 USPTO granted patents. Top assignees: Sony Corporation, Agency of Industrial Science and Technology. Active years: 1984-1999.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Koichi Kawasumi. Retrieved from https://idiyas.com/inventor/koichi-kawasumi

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

USPTO Granted Patents = 11

% Patents Active = 100.0

Average Co-Inventor Count = 4.8

ph-index = 4

Forward Citations = 63(Granted Patents)


Location History:

  • Yokohama, JP (1984)
  • Kanagawa, JP (1991 - 1999)

Company Filing History:

goldMedal9 out of 58,145 
 
Sony Corporation
 patents
silverMedal2 out of 1,430 
 
Agency of Industrial Science and Technology
 patents

Years Active: 1984-1999

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11 patents (USPTO):Explore Patents
1. 5978065 - Liquid crystal device and manufacturing method and apparatus therefor (1999-11-02),
2. 5592208 - Printing method and a printing apparatus for carrying out the same (1997-01-07),
3. 5424163 - Picture recording method using a dispersant having coloring agent (1995-06-13),
4. 5374495 - Developer for electrostatic electrophotography (1994-12-20),
5. 5229235 - Electrophotographic process using melted developer (1993-07-20),
6. 5204215 - Wavelength multiplexed optical recording material (1993-04-20),
7. 5153099 - Wavelength multiplexed optical recording material (1992-10-06),
8. 5116714 - Image forming material with developer and photosensitive base on which (1992-05-26),
9. 5075735 - Electrophotographic apparatus using developer that is changed from a (1991-12-24),
10. 5073798 - Electronic photography apparatus (1991-12-17),
11. 4485168 - Photochromic photosensitive composition (1984-11-27),
Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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